Officials in northwest Pakistan say an explosion near a polio vaccination team has killed two people and wounded 13 others.
Earlier reports said six people were killed in the blast Monday in a village outside of the provincial capital of Peshawar. The toll was revised after authorities received new information from a local hospital
Pakistan is one of three countries in the world where polio is still endemic.
The Global Eradication Initiative says eight new cases of polio were reported in northwest Pakistan last week.
One of the reasons polio remains prevalent is that militants who oppose the campaigns often target the workers and threaten people who want to have their children vaccinated.
A man carries a girl, who was injured in a bomb blast, as she is brought to the Lady Reading Hospital for treatment in Peshawar, Oct. 7, 2013.
Relatives and rescue workers carry the coffin of a man, who was killed in a bomb blast, at a hospital in Peshawar, Oct. 7, 2013.
A security official uses a metal detector to survey the site of a bomb blast in the outskirts of Peshawar, Pakistan, Oct. 7, 2013.